sys/dev/isapnp/wdc_isapnp.c

   1 /*      $NetBSD: wdc_isapnp.c,v 1.38 2008/03/18 20:46:36 cube Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum and by Onno van der Linden.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: wdc_isapnp.c,v 1.38 2008/03/18 20:46:36 cube Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/device.h>
  38 #include <sys/malloc.h>
  39
  40 #include <sys/bus.h>
  41 #include <sys/intr.h>
  42
  43 #include <dev/isa/isavar.h>
  44 #include <dev/isa/isadmavar.h>
  45
  46 #include <dev/isapnp/isapnpreg.h>
  47 #include <dev/isapnp/isapnpvar.h>
  48 #include <dev/isapnp/isapnpdevs.h>
  49
  50 #include <dev/ata/atavar.h>
  51 #include <dev/ic/wdcreg.h>
  52 #include <dev/ic/wdcvar.h>
  53
  54 struct wdc_isapnp_softc {
  55         struct  wdc_softc sc_wdcdev;
  56         struct  ata_channel *wdc_chanlist[1];
  57         struct  ata_channel ata_channel;
  58         struct  ata_queue wdc_chqueue;
  59         struct  wdc_regs wdc_regs;
  60         isa_chipset_tag_t sc_ic;
  61         void    *sc_ih;
  62         int     sc_drq;
  63 };
  64
  65 static int      wdc_isapnp_probe(device_t, cfdata_t, void *);
  66 static void     wdc_isapnp_attach(device_t, device_t, void *);
  67
  68 CFATTACH_DECL_NEW(wdc_isapnp, sizeof(struct wdc_isapnp_softc),
  69     wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL);
  70
  71 #ifdef notyet
  72 static void     wdc_isapnp_dma_setup(struct wdc_isapnp_softc *);
  73 static void     wdc_isapnp_dma_start(void *, void *, size_t, int);
  74 static void     wdc_isapnp_dma_finish(void *);
  75 #endif
  76
  77 static int
  78 wdc_isapnp_probe(device_t parent, cfdata_t match, void *aux)
  79 {
  80         int pri, variant;
  81
  82         pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant);
  83         if (pri && variant > 0)
  84                 pri = 0;
  85         return (pri);
  86 }
  87
  88 static void
  89 wdc_isapnp_attach(device_t parent, device_t self, void *aux)
  90 {
  91         struct wdc_isapnp_softc *sc = device_private(self);
  92         struct wdc_regs *wdr;
  93         struct isapnp_attach_args *ipa = aux;
  94         int i;
  95
  96         if (ipa->ipa_nio != 2 ||
  97             ipa->ipa_nmem != 0 ||
  98             ipa->ipa_nmem32 != 0 ||
  99             ipa->ipa_nirq != 1 ||
 100             ipa->ipa_ndrq > 1) {
 101                 aprint_error(": unexpected configuration\n");
 102                 return;
 103         }
 104
 105         if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
 106                 aprint_error(": couldn't map registers\n");
 107                 return;
 108         }
 109
 110         aprint_normal(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass);
 111
 112         sc->sc_wdcdev.sc_atac.atac_dev = self;
 113         sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
 114         wdr->cmd_iot = ipa->ipa_iot;
 115         wdr->ctl_iot = ipa->ipa_iot;
 116         /*
 117          * An IDE controller can feed us the regions in any order. Pass
 118          * them along with the 8-byte region in sc_ad.ioh, and the other
 119          * (2 byte) region in auxioh.
 120          */
 121         if (ipa->ipa_io[0].length == 8) {
 122                 wdr->cmd_baseioh = ipa->ipa_io[0].h;
 123                 wdr->ctl_ioh = ipa->ipa_io[1].h;
 124         } else {
 125                 wdr->cmd_baseioh = ipa->ipa_io[1].h;
 126                 wdr->ctl_ioh = ipa->ipa_io[0].h;
 127         }
 128
 129         for (i = 0; i < WDC_NREG; i++) {
 130                 if (bus_space_subregion(wdr->cmd_iot,
 131                     wdr->cmd_baseioh, i, i == 0 ? 4 : 1,
 132                     &wdr->cmd_iohs[i]) != 0) {
 133                         aprint_error(": couldn't subregion registers\n");
 134                         return;
 135                 }
 136         }
 137         wdr->data32iot = wdr->cmd_iot;
 138         wdr->data32ioh = wdr->cmd_iohs[0];
 139
 140         sc->sc_ic = ipa->ipa_ic;
 141         sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
 142             ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->ata_channel);
 143
 144 #ifdef notyet
 145         if (ipa->ipa_ndrq > 0) {
 146                 sc->sc_drq = ipa->ipa_drq[0].num;
 147
 148                 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA;
 149                 sc->sc_wdcdev.dma_start = &wdc_isapnp_dma_start;
 150                 sc->sc_wdcdev.dma_finish = &wdc_isapnp_dma_finish;
 151                 wdc_isapnp_dma_setup(sc);
 152         }
 153 #endif
 154         sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
 155         sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
 156         sc->wdc_chanlist[0] = &sc->ata_channel;
 157         sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist;
 158         sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
 159         sc->ata_channel.ch_channel = 0;
 160         sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
 161         sc->ata_channel.ch_queue = &sc->wdc_chqueue;
 162         sc->ata_channel.ch_ndrive = 2;
 163
 164         wdc_init_shadow_regs(&sc->ata_channel);
 165
 166         wdcattach(&sc->ata_channel);
 167 }
 168
 169 #ifdef notyet
 170 static void
 171 wdc_isapnp_dma_setup(struct wdc_isapnp_softc *sc)
 172 {
 173
 174         if (isa_dmamap_create(sc->sc_ic, sc->sc_drq,
 175             MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
 176                 aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
 177                     "can't create map for drq %d\n", sc->sc_drq);
 178                 sc->sc_wdcdev.sc_atac.atac_cap &= ~ATAC_CAP_DMA;
 179         }
 180 }
 181
 182 static void
 183 wdc_isapnp_dma_start(void *scv, void *buf, size_t size, int read)
 184 {
 185         struct wdc_isapnp_softc *sc = scv;
 186
 187         isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL,
 188             (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND,
 189             BUS_DMA_NOWAIT);
 190 }
 191
 192 static void
 193 wdc_isapnp_dma_finish(void *scv)
 194 {
 195         struct wdc_isapnp_softc *sc = scv;
 196
 197         isa_dmadone(sc->sc_ic, sc->sc_drq);
 198 }
 199 #endif